Posted by
Christina Steils on
URL: https://www.es-forum.com/RF-generated-by-car-motor-What-to-do-tp1553765p1553768.html
As a guess i the say its small amount of wireless to read the pressure of the tyre censors..
Unfortunately my motorbike has this device, and the transmitter is situatedunder my seat! But in the whole case of being surrounded in London. I dontreally feel it.
Best
Giles
--- On Wed, 28/4/10, R. Ticle <
[hidden email]> wrote:
From: R. Ticle <
[hidden email]>
Subject: [eSens] RF generated by car (motor)? What to do?
To:
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Cc:
[hidden email]
Date: Wednesday, 28 April, 2010, 1:23
Recently my partner and I were driving around the countryside, looking out for areas without a lot of cell towers. We were approaching oneup the road, and I had my Gigahertz Solutions meter (800 MHz to 2.5 GHz) in the car; I turned it on, and it started making noise and registering RF.
We stopped a ways away from the tower, turned off the car, and got out. Suddenly, the RF meter showed nothing. Not a tiny bit of RF. "What the hell?", I said. "Could it be malfunctioning? " We got back in the car, drove a bit more, and the meter registered RF. "Hmm",I said.
We turned off the car, and the meter stopped registering RF. Turned on the car, the meter showed RF. Clearly, something in the car is generating RF! I'm assuming it's something under the hood (I really know very little about cars), though it comes into the car, too; by the floor mats, itwas up to 30 or more uW/m2; when I checked outside of the car, even with the hood closed, it still registered! With the hood open, I couldn't tell what it actually was coming from.
Now, this is an older model (maybe late '90s or early 2000s - but probably more likely from the late 1990's) Honda Civic. There are no GPS or wireless systems. Neither of us use a cell phone. I believe the displays (speedometer, etc.) are analog (using needles, not digital readouts). I don't think the radio was on.
The noise from the RF meter seemed kind of "fast", like it was in time to something some part of the motor was doing. You know how if you hold an RF meter to a light switch and flick the light switch on, it can generatea bit of RF that the meter will register? Is this (what I register from the car) the same sort - and is it something to be concerned about?
Is there anything we can do to block it (like at least putting foil under the floormats, or anything else you can think of)? Or would that just make things worse?
Or is there something that could be done to the motor?
In my dad's pickup truck (a Dodge Ram, I believe), I've never picked up RF with my meter. Nor my mother's Suzuki Aereo, or however you spell it.
Any thoughts/advice are most welcome.
Thanks!
R.
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